Refrigerator shelf



FIG. 1 is a perspective view showing a refrigerator shelf of the present invention;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side view thereof; and,

FIG. 5 is a rear view thereof.

The broken lines shown in drawings represent unclaimed portions of the refrigerator shelf and form no parts of the claimed design. 

CLAIM The ornamental design for a refrigerator shelf, as shown and described. 